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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,520 Documents
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Sleep Disorders in Post Stroke Patients : A Literature Review Putri, Radiah Meilani; T., Rizqy Agung Fatahillah; Lovely, Anjela Fatma; Faqih, Fauzan; Purba G., Andrew Deardo; Fildzani, Qashrina Vania; Rakadi P., Rifky Sandya
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7810

Abstract

Stroke as a neurological disease caused by vascular injury to the central nervous system, is a leading cause of death and disability worldwide. The impact of a stroke is not only felt at the time of the incident but also post-stroke, particularly in the form of sleep disturbances experienced by 20-78% of patients. This review aims to delve into various aspects related to post-stroke sleep disorders, including definition, etiology, epidemiology, physiology, pathophysiology, management, and impact. These sleep disorders such as insomnia, hypersomnia, parasomnia, SDB (Sleep-disordered breathing), PLMS (Periodic Leg Movement during Sleep), and RLS (Restless Leg Syndrome) can worsen rehabilitation and increase the risk of recurrent strokes. The existing therapies are still in the research phase with varying prognoses, indicating the need for a deeper understanding of this condition and its management.
Isolation and Identification of Biosurfactantproducing Bacteria from the Aerobic Pond of Oil Palm Liquid Waste at PT. Aek Loba Plantation Andini, Diah Ayu; Rasyidah, Rasyidah; Mayasari, Ulfayani
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7811

Abstract

Biosurfactants are natural surfactants derived from bacteria which can degrade oil content in soil or water. Most of these biosurfactant-producing bacteria are often  found in areas polluted by oil and grease, such as aerobic ponds of palm oil liquid waste. The purpose of this research was to isolate and identify biosurfactant-producing bacteria from aerobic ponds of palm oil wastewater at PT. Aek Loba Plantation. This research was conducted using descriptive and identification methods through emulsification tests, morphological characterization, gram staining, biochemical tests, and PCR (Polymerase Chain Reaction) methods for bacteria that had the highest emulsification index values. Based on the results of the emulsification test, it was found that 8 biosurfactant-producing bacterial isolates consisted of 6 bacterial genera and 1 bacterial species that had different emulsification indexes, namely 1 Citrobacter genus isolate (30%), 1 Enterobacter genus bacterial isolate (42.2%) , 2 isolates from the genus Eschericia (35.9% and 36.5%), 1 isolate from the genus Pseudomonas (32%), 1 isolate from the genus Micrococcus (37.5%), 1 isolate from the genus Bacillus, and 1 species of bacteria Klebsiella variicola (42.8%) which is a biosurfactant producing bacteria that has the highest emulsification index value.
Predation Intensity on the Brittle Star Ophiomastix annulosa on Serinting Beach of Lombok Island Al-Khulaifi, Fazza Firjatullah; Bachtiar, Imam; Khairuddin, Khairuddin; Suyantri, Eni
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7822

Abstract

The Ophiuroid has an important role in intertidal area. Many scientific papers show predation (partial loss of arms) on Ophiuroid. Predators of the Ophiuroid include sea urchins, sea stars, demersal fish, shrimp, and crabs. Ophiuroid that have a larger disc diameter can prey on species that have a smaller disc diameter. This study aims to describe the predation intensity of the Ophiomastix annulosa using the cruising method and analyze the correlation between disc diameter and predation intensity at the Serinting Beach, Special Economic Zone (SEZ) of Mandalika. The results showed that disc diameter and predation intensity on O. annulosa varied greatly. The size of the disc diameter found ranged from 1.01-2.55 cm. Most disc diameters were found at 1.55-1.84 cm. A total of 45% of the sample brittle star experienced predation. Predation intensity was mostly found at loosing one arm. There was no correlation between O. annulosa disc diameter and predation intensity at Serinting Beach Mandalika.
Optimizing The Utilization of Arabica Coffe Grounds Extract on the Growth Perfomance of Tilapia (Oreochromis Niloticus) Nisa, Haerunnisaa; Diamahesa, Wastu Ayu; Lestari, Dewi Putri
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7831

Abstract

Nile tilapia (Oreochromis niloticus) is a widely cultivated freshwater fish due to its adaptability to various environments and ease of breeding. Feed availability is a crucial factor in the success of tilapia cultivation. Quality feed plays a vital role in fish development and using effective feed management strategies can help reduce costs and improve growth outcomes. Previous studies have suggested that coffee grounds can enhance fish immunity and growth due to their antioxidant properties. This research aimed to investigate the impact of adding coffee grounds to commercial feed on the growth and survival of Nile tilapia. The study was conducted over 45 days using a completely randomized design with five treatments and three replications. Treatments included a control group (P1) and feed supplemented with 0.5g (P2), 1g (P3), 3g (P4), and 5g (P5) of coffee grounds per 100g of feed. The results indicated that the addition of coffee grounds significantly affected weight growth, with the highest growth observed in P5. However, no significant differences were found in length growth or specific growth rate (SGR) among treatments. Feed consumption was highest in P2, but feed conversion ratio (FCR) and feed utilization efficiency were most favorable in P5. Water quality parameters remained within optimal ranges throughout the study.
Preliminary Test of the Sensitivity of Colletotrichum spp. to Binahong Ethanol Extract (Anredera cordifolia) Aminatuzzifah, Putri; Bahri, Syamsul; Sedijani, Prapti
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7840

Abstract

The agricultural sector in Indonesia, especially the horticultural subsector, plays an important role in the economy and food security. One of the leading commodities in horticulture is the chilli plant (Capsicum annuum), which is very susceptible to anthracnose disease caused by the fungus Colletotrichum spp. This study aims to test the inhibitory activity of ethanol extract from binahong (Anredera cordifolia) leaves against the growth of Colletotrichum spp. fungus as an alternative environmentally friendly disease control. The research was conducted using a completely randomised design (CRD) with variations in extract concentrations of 0%, 0.5%, 1%, 1.5%, 2%, and 2.5%, each of which was tested three times. The results showed that 2.5% concentration of binahong leaf extract produced the highest inhibitory activity of 70%, while 0.5% concentration showed 56% inhibition. This inhibitory activity was categorised as strong. ANOVA analysis showed significant differences between treatments (p < 0.05). These findings demonstrate the potential of binahong leaf extract as a biofungicide in the control of anthracnose disease in chilli plants, which may contribute to more sustainable and environmentally friendly agricultural practices.
Chromosomes Characteristics of Vegetable Fern (Diplazium esculentum) in Rinjani Mountain National Park Pratiwi, Elsa; Mertha, I Gde; Sukarso, A. A.
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7846

Abstract

Vegetable fern (Diplazium esculentum) is one type of fern that is utilised by the Indonesian people as one of the food ingredients. Chromosomes are genetic information in cells that are the basic unit of life. The purpose of this study was to determine the number of chromosomes and mitotic index of vegetable spikes (D. esculentum) at various altitudes in Mount Rinjani National Park. The type of research is quantitative research that describes a situation using numbers factually, systematically and accurately quantitative data of vegetable fern chromosomes (D. esculentum). The method used in the research is Squash method. The results showed no difference in the number of chromosomes of vegetable spikes (D. esculentum) at an altitude of 292 masl, 538 masl, 703 masl and 1417 masl. The number of chromosomes of vegetable spikes at all altitudes 2n = 82 (diploid) x = 41. The mitotic index of vegetable spikes showed results that were not significantly different at altitudes of 292 masl, 538 masl, 703 masl and 1417 masl.
Factors Related to Maternal COVID-19 Vaccination Status in Mpunda Public Health Center Warnaini, Cut; Rahma, Jaini
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7851

Abstract

Pregnant women were among the vulnerable population for COVID-19 infection. Therefore, it is important for pregnant women to carry out a complete COVID-19 vaccination. Complete COVID-19 vaccination status for pregnant women is when the pregnant woman has received two doses of the vaccine, where the first dose of vaccination begins in the second trimester of pregnancy and the second dose is given according to the interval of the type of vaccine. Even though the Covid-19 vaccination program has contributed to reducing death rates and infectious diseases, there will still be concerns and doubts among pregnant women and women of reproductive age. Therefore, this research is aimed to observe and analyze factors related to Maternal COVID-19 Vaccination Status specifically in Mpunda Public Health Center, Bima. This study employs a mixed-method analysis and was conducted in Mpunda Public Health Center involving 136 pregnant women. We found that socioeconomic factor such as income level, prior vaccination status, and vaccination history was significantly associated with COVID-19 vaccination status among pregnant women, but not history of adverse events. We also concluded that fear of vaccine was significantly associated with COVID-19 vaccination status among pregnant women. Results of this research hopefully can add to the growing body of evidence regarding maternal COVID-19 vaccination status and aid the policy-making process regarding this topic.
Analysis of Heavy Metal Mercury (Hg) Content in Nile Tilapia (Oreochromis niloticus) from Rawa Taliwang Lake West Sumbawa Seftiyani, Ditayara; Khairuddin, Khairuddin; Kusmiyati, Kusmiyati
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7852

Abstract

Rawa Taliwang Lake is a place where various types of aquatic organisms (macroorganisms and microorganisms) occur biological processes. Industrial activities can lead to the emergence of pollutants that contaminate the environment, including air, land, and water, if industrial waste is not managed properly. Surface water, especially in lakes, is easily polluted by heavy metals such as mercury (Hg). Mercury (Hg) levels that exceed normal limits in fish can be an indicator of environmental pollution. The study aims to determine the levels of heavy metal mercury (Hg) in tilapia (Oreochromis niloticus) and to assess the safety of consuming the fish. Samples were analyzed using the Atomic Absorption Spectroscopy (AAS) method. The results showed that tilapia samples had mercury (Hg) levels of 0.1 mg/kg (ppm), but were still safe for consumption. In line with BPOM Number 9 of 2022 which sets the threshold for heavy metal mercury (Hg) contamination in processed food products at 0.50 mg/kg.
Optimization of Pectin Extraction from Albedo of Watermelon (Citrullus lanatus) using Response Surface Methodology Pagarra, Halifah; Rachmawaty, Rachmawaty; Sahribulan, Sahribulan
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7864

Abstract

This research delves into the utilization of albedo of watermelon rind as a potential source of pectin, a vital polysaccharide with wide-ranging applications in food and pharmaceutical industries due to its gelling and stabilizing properties. The study specifically focuses on the extraction of pectin from watermelon (albedo) using advanced methodologies like central composite design (CCD) and response surface methodology (RSM). These methods allow for the optimization of key processing parameters: temperature (at levels of 60, 80, and 100°C), pH (at levels of 1.5, 2.0, and 2.5), and extraction time (at levels of 60, 90, and 120 minutes). The study's findings highlight how these factors have a major impact on the amount of pectin that is extracted. The complex link between the input variables (temperature, pH, and extraction time) and the final pectin yield is thoroughly explained by means of a second-order polynomial model. Notably, the study identifies optimal conditions for pectin extraction, where the highest yield of 6.42% was achieved. These optimal conditions entail a temperature of 100°C, pH of 1.5, and extraction time of 60 minutes. Furthermore, the research highlights the individual impact of temperature, pH, and extraction time on pectin yield, demonstrating their significant roles in the extraction process. By providing insights into the optimization of pectin extraction from albedo of watermelon this study contributes to the broader understanding of utilizing agricultural by-products for value-added applications in various industries.
Antibacterial Activity of Jotang Flower Infusion (Acmella paniculata) against Staphylococcus aureus Skania, Pratiwi Cahya; Kholifah, Eva; Agustin, Siti
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7877

Abstract

Among its various uses, the plant Jotang (Acmella paniculata), which is a member of the Asteraceae family, possesses antibacterial and anti-infective properties in its floral section. The majority of diseases are caused by the Streptococcus aureus bacteria. The purpose of this study was to evaluate the antibacterial activity of jotang flower infusion against Streptococcus mutans at doses of 75%, 50%, and 25%. The antibacterial activity was evaluated using the agar diffusion method, with chloramphenicol acting as a positive control. At 25%, 50%, and 75% dosages, the average inhibition zone diameter in the jotang inhibition test was 5.00 mm, 6.00 mm, and 6.06 mm, respectively. Chloramphenicol, the positive control, had a measurement of 9.96 mm. According to the study's results, jotang flower infusion has a somewhat effective antibacterial effect on Streptococcus aureus.

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